'll go and at 8:00 p.m. eastern he'll no longer be pope benedict xvi but rather pope benedict amara. >> the world is eagerly waiting to see who will replace him. do we know more of when the conclave will start? >> reporter: we don't at this point, mara. we do know the general meetings among the cardinals, the cardinals over the age of 80 don't get to vote for the new pope and the cardinal electors begin on monday. sometime between monday and tuesday we'll get a definite start date for the conclave. >> ann thompson live at the vatican. thank you for that. when the pope leaves later today, he'll be heading to castel gandolfo. claudio is joining us live from there this morning, good morning. >> reporter: good morning. the pope is expected to arrive here in four hours and people are starting to gatter in the main square to bid him one last farewell. among the first to arrive here in the square is a group of american students from a catholic university from ohio. i'm joined here by one of them. student mike -- stacen. were you surprised when the pope announced his resignation? >> i was.